JP3989757B2 - Signal recording device for disc - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a signal recording apparatus for recording a control signal or the like on an optical disk or the like.
[0002]
[Prior art]
Various media such as tapes and disks are provided as information recording media. They can be classified into a number of types according to the form and recording principle, each having its own characteristics. Among these many types of recording media, an optical disk device using an optical recording system is recently used as a replaceable large-capacity recording medium. Optical discs can be classified into several categories according to the recording principle, and each has been put to practical use in accordance with industry standards. Optical discs are generally suitable for mass production, so the price is low and the recording reliability is high. Furthermore, since it is easier to copy information than tape, it is expected that the field of use will be expanded in the future.
[0003]
By the way, some types of optical discs need to record identification information and control signals used for control in the disc manufacturing process. This control signal is recorded on the disk one by one while rotating the disk. The process of recording the control signal is incorporated as one process in the process of producing the optical disc and is called a control signal recording process. The control signal recording process uses a signal recording device on a disc specially designed for recording the control signal. In order to record a control signal on one disc, a time of about 3 seconds to 120 seconds is required. This time requires a longer time in the disk manufacturing process than in other processes. When an optical disk is mass-produced, it is necessary to prevent a bottleneck from occurring in all the processes. For this purpose, the process of recording this control signal needs to match the speed of other processes.
[0004]
One solution is to eliminate a speed difference from other processes by arranging a plurality of devices in charge of the process in parallel and operating them in parallel at the same time. Various conventional signal recording apparatuses for discs are known, but the mechanisms described in JP-A-10-269679 (G11B19 / 02), USP 5291456, and the like can be used. The techniques disclosed in these documents are not for recording control signals but for recording signals on the entire surface of the disk. The apparatus shown here has a recording part for recording signals on the disc, a supply part for automatically supplying an unrecorded disc to the recording part, and a discharge part for automatically taking out the recorded disc from the recording part. And all the elements necessary for a signal recording apparatus for recording a disc that automatically incorporates a control signal into the disc manufacturing process.
[0005]
The devices shown in these documents are reasonable when the time required for recording a signal on one disc takes from 240 seconds to 600 seconds or more. In other words, the disk can be automatically acquired, a signal can be recorded on the disk, and the recorded disk can be automatically ejected, so that it can be easily incorporated into the disk production process. If it is necessary to shorten the time required in this process, the number of devices may be increased and simultaneous operation may be performed. However, when the time required for recording a signal on one disk is short, the efficiency of the apparatus exemplified here is not good. Certainly, if the number of devices is increased, the time in this process can be shortened, but the efficiency is not improved for the time of actually recording signals on the disc.
[0006]
The inventor investigated and examined the cause from various viewpoints. As a result, if the time required for recording is short when recording a signal on the disc, the ratio of the time required to automatically acquire the disc and the time required to eject the disc is larger than expected and cannot be ignored. The conclusion was reached. In addition, it was concluded that a significant improvement in efficiency could not be expected by an improvement that merely increased the operating speed of the supply section. Further examination of this main cause, the shorter the time in the recording part that records the signal on the disc, the higher the ratio of the time required to eject the recorded disc and supply the unrecorded disc, It turns out that the ratio of waiting time of the recording part increases. Specifically, when the supply takes 15 seconds, the recording takes 270 seconds, and the discharge takes 15 seconds, the ratio of the supply and discharge time in the signal recording process 300 seconds is 10%. However, when recording takes 30 seconds, the ratio of the time required for supply and discharge in the signal recording process 60 seconds is 50%. Furthermore, when the recording time is 10 seconds, 75% of the signal recording process is occupied by supply and discharge of the disc. In this case, in order to prevent the recording process from becoming a bottleneck, it is necessary to run a large number of recording devices in parallel. It is inevitable to install a simple control mechanism.
[0007]
[Problems to be solved by the invention]
The conventional signal recording apparatus for a disc has no particular problem when the time required for recording a signal on one disc is long, but the efficiency becomes worse as the time required for recording becomes shorter. there were. It is an object of the present invention to obtain a signal recording device for a disk whose efficiency is not lowered when the time required for recording a signal on one disk is short.
[0008]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a signal recording apparatus for recording a signal on an unrecorded disc and producing the recorded disc in the unrecorded disc. An unrecorded disc holding means for holding the disc at a predetermined position, a recording means for holding the unrecorded disc, recording a signal on the unrecorded disc, and making the recorded disc, and the recorded disc Recorded disk holding means for holding the unrecorded disk at a predetermined position, first transfer means for receiving the unrecorded disk from the unrecorded disk holding means and attaching it to the recording means, and removing the recorded disk from the recording means Te is composed of a second transport means to pass to the recorded disc holding means, the first transfer means and the second transfer means and the separate A stage are separately driven, before said second transfer means removing the recorded disc from the recording means, holding the blank disc in which the first transport means has received from the unrecorded disc holding means Thus, the apparatus is a signal recording apparatus for recording on a disc characterized by being on standby.
[0009]
According to a second aspect of the present invention, there is provided the signal to the disc according to the first aspect, wherein the recording means includes a plurality of recording units for recording signals on an unrecorded disc. This is a recording apparatus.
[0010]
Embodiment
FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a plan view partially showing a cross section. Reference numeral 1 denotes an entire signal recording apparatus for a disc. The signal recording apparatus 1 is generally composed of three parts, a right part, a central part, and a left part. 1 and 2, an unrecorded disc is supplied from the right part of the drawing, a signal is recorded in the central part, and finally ejected toward the left part. Reference numeral 2 denotes an unrecorded disk holding means disposed on the right side portion of the signal recording apparatus 1. The unrecorded disk holding means 2 stacks and holds unrecorded disks. Reference numeral 3 denotes recording means arranged in the central portion of the signal recording apparatus 1. The recording means 3 records a signal on an unrecorded disk to obtain a recorded disk. Reference numeral 4 denotes a recorded disk holding means disposed on the left side of the signal recording apparatus 1. The recorded disk holding means 4 stacks and holds recorded disks. 5 is a 1st transfer means. The first transfer means takes one unrecorded disk from the unrecorded disk holding means 2 and transfers it to the recording means 3. 6 is a 2nd transfer means. The second transfer means 6 takes out the recorded disc from the recording means 3 and transfers it to the recorded disc holding means 4. 7 is a discarding means. The discarding unit 7 is for discarding a disc that does not conform to the standard when there is an unrecorded disc that does not conform to the standard or when a signal is recorded by the recording unit 3.
[0011]
FIG. 3 is a partially enlarged view showing the configuration of the unrecorded disk holding means 2 . The unrecorded disk holding means 2 includes a turntable 9, shafts 10 and 11, and an elevator 12. The turntable 9 switches unrecorded discs stacked on the shafts 10 and 11. The shafts 10 and 11 are guide shafts when unrecorded discs are stacked and supplied. The elevator 12 positions the uppermost portion of the unrecorded disk stacked on the shaft 10 with respect to the first transfer means 5. The unrecorded disk 13 is a synthetic resin thin disk having a diameter of about 12 centimeters, and has a circular hole in the center.
[0012]
The shaft 10 is inserted into a hole at the center of the disk 13. The disks 13 are stacked with the shaft 10 as an axis. The turntable 9 includes four shaft receivers 15 and can be rotated by 90 degrees about the rotation shaft 14. Although only two shafts 10 and 11 are shown in FIG. 3, the turntable 9 can actually support four shafts. In FIG. 3, 16 is a motor. The motor 16 rotationally drives the turntable 9 via the rotating shaft 14. The elevator 12 is movable up and down along an elevator shaft 19 that stands vertically between the lower panel base 17 and the upper panel base 18. The elevator panel 22 is a panel that supports the entire elevator 12, and is movably attached to the elevator shaft 19 via a feed screw 23. The outer periphery of the elevator shaft 19 is provided with a spiral over its entire length, and the feed screw 23 moves up and down as the elevator shaft 19 rotates. 21 is an elevator motor. The elevator motor 21 is connected to the elevator shaft 19 with the lower panel base 17 interposed therebetween, and rotates the elevator shaft 19.
[0013]
4 is a plan view of the partially enlarged view shown in FIG. 3, in which the first transfer means 5 shown in FIG. 2 is removed. Reference numeral 24 denotes a guide shaft. The guide shafts 24 and 24 are provided in parallel with the elevator shaft 19 and guide the vertical movement of the elevator panel 22. Reference numeral 25 denotes a disk support arm. The disk support arm 25 can be rotated about a rotation shaft 26. 27 is an air cylinder. One end of the air cylinder 27 is attached to the elevator panel 22, and the other end is coupled to the disk support arm 25 via a link 28. When the air cylinder 27 performs an expansion / contraction operation, the disc support arm 25 performs an approach operation or a separation operation with respect to the shaft 10. The disk support arm 25 has a curved portion 29. When the bending portion 29 is located at a position surrounding the shaft 10, the bending portion 29 enters the lower side of the disk stacked on the shaft 10. If the elevator panel 22 moves upward as shown in FIG. 3 when the curved portion 29 is in a position surrounding the shaft 10, the disks stacked along the shaft 10 also move upward. FIG. 1 shows a state where the elevator 12 is in a lowered position, and FIG. 3 shows a state where the elevator 12 is in a raised position. The elevator 12 is positioned such that the uppermost portion 30 of the unrecorded disk stacked along the shaft 10 is always at a certain height position with respect to the upper panel base 18. That is, as indicated by the shaft 11 in FIG. 3, the elevator 12 may, when unrecorded disc 13 is almost all, in a position close to the turntable 9, and gradually as the disk is taken out one by one Ascend and maintain the position of the top 30 relative to the upper panel base 18 to be constant at all times.
[0014]
5 and 6 are a plan view and a front view showing the configuration of the first transfer means 5 and the recording means 3, respectively. In either case, the configuration in the vicinity of the unrecorded disk holding means 2 is omitted. In FIG. 6, reference numerals 32, 33, 34, and 35 denote recording units. Each recording unit is an independent unit and includes most of the mechanisms for recording signals on unrecorded discs. The recording means 3 is obtained by stacking a plurality of recording units vertically at equal intervals. The recording units 32, 33 , 34, 35 themselves can be purchased from specialized manufacturers depending on the disc specifications. FIG. 5 shows a plan view of the recording unit 33. The recording unit 33 is provided with a tray 36 that can enter and exit the recording unit 33. In order to record a signal on the unrecorded disk 13 by the recording unit 33, first, the tray 36 is pulled out of the recording unit 33. Next, one unrecorded disk 13 is placed on the tray 36. Thereafter, the tray 36 is pulled into the recording unit 33. Reference numeral 37 denotes the position of the tray 36 drawn into the recording unit 33. When a signal to be recorded is supplied to the recording unit 33, the signal is recorded on an unrecorded disc.
[0015]
The disc on which the signal has been recorded inside the recording unit 33 is pulled out again from the position indicated by 37 to the position indicated by 36. Then, the recorded disc can be removed from the tray 36. The first transfer unit 5 includes a carriage 71 and a handler 38 attached to the carriage 71. The carriage 71 is supported by the vertically extending shaft 39 and the feed screw 40, and can move up and down along the extending direction of the shaft 39. In FIG. 6, reference numeral 41 denotes a carriage motor. The carriage motor 41 rotates the feed screw 40 clockwise or counterclockwise. The carriage 71 is moved up and down by the feed screw 40 rotated by the carriage motor 41 as shown in FIG. As shown in FIG. 5, the handler 38 is attached to one end of a rail 42, and the rail 42 is supported by a rail base 43 fixed to the carriage 71. 44 is an air cylinder. The air cylinder 44 is fixed to the carriage 71, and the tip of the piston is attached to the handler 38. The rail 42 and the rail base 43 can freely slide along the longitudinal direction of the rail 42. As a result, when the air cylinder 44 is operated, the handler 38 can move left and right in FIGS. 5 and 6.
[0016]
In FIG. 6, a position indicated by 71 is a standby position for the carriage 71 and the handler 38. An operation in which the first transfer means 5 transfers the unrecorded disc 13 to the tray 36 of the recording unit 33 from this state will be described. First, the carriage 71 moves down along the Y axis when the carriage motor 41 operates. Then, the handler 38 comes into contact with the upper surface of the unrecorded disc 13 . The handler 38 is connected to a negative pressure source (not shown), and sucks and holds the disk on the uppermost surface of the unrecorded disk 13 at its tip. Next, the carriage 71 moves up to a position indicated by 44 along the Y axis while the handler 38 holds the disk. Thereafter, when the air cylinder 44 operates, the handler 38 moves to the position indicated by 46 along the X axis. Finally, when the disk held by the handler 38 is released, the disk is placed on the tray 36. The configuration of the second transfer means 6 shown in FIGS. 1 and 2 can be realized with substantially the same configuration as the first transfer means 5.
[0017]
In the recorded disk holding means 4, 51 is a shaft. The shaft 51 is a shaft for receiving a disc on which a signal is recorded from the second transfer unit 6, and corresponds to the shaft 10 of the unrecorded disc holding unit 2. Reference numeral 53 shown in FIG. 2 denotes a disk support arm. The disk support arm 53 has the same configuration as the disk support arm 25, but supports the recorded disks stacked on the shaft 51. 54 is an elevator. The elevator 54 moves the disk support arm 53 up and down along the shaft 51. Reference numeral 55 in FIG. 1 denotes an elevator motor. The elevator motor 55 corresponds to the elevator motor 21 and drives the elevator 54 shown in FIG. 2 up and down. In FIG. 1, the elevator 12 of the unrecorded holding means 2 and the elevator 54 of the recorded disk holding means 4 have almost the same configuration, but the operations are different. In other words, the elevator 12 and the elevator 54 have the same operation so that the tops of the disks stacked on the shaft 10 and the shaft 51 are always constant, but as the process proceeds, the elevator 12 gradually rises. The elevator 54 gradually descends. In the initial state, since a large number of unrecorded disks are stacked on the shaft 10, the elevator 12 is in the lowered position. On the other hand, since there is no recorded disc on the shaft 51 at that time, the elevator 54 is in the raised position. However, the elevator 12 and the elevator 54 do not operate in conjunction with each other, and their height positions depend on the thickness of the disks stacked on the shaft 10 or the shaft 51.
[0018]
In FIG. 1, the configuration of the second transfer means 6 corresponds to the configuration of the first transfer means 5. The carriage motor 57 corresponds to the carriage motor 41, and the carriage motor 57 moves the carriage 56 up and down by rotationally driving a feed screw 58 shown in FIG. The air cylinder 59 corresponds to the air cylinder 44, and the air cylinder 59 moves the handler 60 left and right. With the above configuration, the operation of the first transfer means 5 and the second transfer means 6 will be described with reference to FIG. In the initial state, no disc is loaded in the tray 36 of the recording unit 33. In this state, first, the handler 38 holds one unrecorded disk 13 from the uppermost surface of the unrecorded disk 13 stacked on the shaft 10 of the unrecorded disk holding means 2 shown in FIG. As shown, it is brought to a position slightly higher than the tray 36. Next, the tray 36 comes to the front. The handler 38 moves the unrecorded disk 13 along the X axis, and places the unrecorded disk 13 on the tray 36. Thereafter, the handler 38 again returns to the position shown in FIG. 7 along the X axis, and goes to acquire the next unrecorded disc 13 . The carriage 56 stands by at a position where a recorded disc is acquired from the tray 36 of the recording unit 33.
[0019]
Immediately before the recording of the signal to the disk by the recording unit 33 is completed, the handler 38 again stands by in the vicinity of the tray 36 while holding an unrecorded disk. When the signal recording in the recording unit 33 is completed, the tray 36 comes out to the front again. Immediately, the handler 60 acquires a recorded disc from the tray 36. Further, the handler 38 immediately supplies an unrecorded disc to the tray 36. Thus, the handler 60 and the handler 38 operate so as to minimize the non-operating state of the recording unit 33. In FIG. 1, 65 is a motor. Motor 65, like the motor 16, for rotating to stop the turntable 66 in a fixed angle. That is, the turntable 9 and the turntable 66 shown in FIG. 2 can accommodate four shafts corresponding to the shaft 10 and the shaft 51, respectively, and the first transfer means 5 and the second transfer means 6 as required. Positioning is possible directly below.
[0020]
The discarding means 7 is provided with a fixed shaft 67. When the tray of the recording unit 3 is accommodated in each recording unit, the discs held by both the first transfer unit 5 and the second transfer unit 6 can be stacked on the shaft 67. The discarding means 7 is for discharging the unrecorded disc or the recorded disc in which an abnormality has occurred, and sorts out the abnormal disc so that the operation of the signal recording apparatus 1 on the disc is not stopped by the abnormal disc. To do. As described above, the control collects information on the position and state of the unrecorded disk holding means 2, the first transport means 5, the recording means 3, the second transport means 6, and the recorded disk holding means 4 by a computer. By doing so, control is possible. As described above, the first transfer means 5 and the second transfer means 6 are the first transfer means 5 immediately after the second transfer means 6 takes out the recorded disc from the tray 36 of the recording unit 33. By supplying the unrecorded disc 13 to the tray 36 of the recording unit 33, the recording means 3 operates in cooperation so as to minimize the time during which no signal is recorded on the disc.
[0021]
【effect】
As described above, the conventional signal recording apparatus for a disc is not particularly problematic when the time required for recording a signal on one disc is long, but the efficiency decreases as the time required for recording becomes shorter. Although there is a problem of deterioration, by implementing the present invention, there is an effect that it is possible to obtain a signal recording device for a disk whose efficiency is not lowered when the time required for recording a signal on one disk is short. is there.
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment. FIG. 2 is a plan view of the embodiment. FIG. 3 is an enlarged view of a right portion of the front view of the embodiment. Enlarged view [Fig. 5] Enlarged view of the central portion of the plan view of the embodiment. [Fig. 6] Enlarged view of the central portion of the front view of the embodiment. [Fig.
DESCRIPTION OF SYMBOLS 1 Signal recording device to disk 2 Unrecorded disk holding means 3 Recording means 4 Recorded disk holding means 5 First transfer means 6 Second transfer means

Claims (2)

In a signal recording apparatus for recording a signal on an unrecorded disk and producing a recorded disk, an unrecorded disk holding means for holding the unrecorded disk at a predetermined position; and Recording means for holding a disk, recording a signal on the unrecorded disk, and making the recorded disk; recorded disk holding means for holding the recorded disk in a predetermined position; and A first transfer unit that receives from the unrecorded disc holding unit and attaches to the recording unit; and a second transfer unit that removes the recorded disc from the recording unit and delivers it to the recorded disc holding unit,
The first transfer means and the second transfer means are separate means and are driven separately, and before the second transfer means removes the recorded disk from the recording means, the first transfer means An apparatus for recording a signal on a disk, wherein the transfer means holds the unrecorded disk received from the unrecorded disk holding means and stands by.   2. A signal recording apparatus for a disk according to claim 1, wherein the recording means includes a plurality of recording units for recording signals on an unrecorded disk.

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